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» Anaktuvuk River fire scar thaw depth measurements during the 2008 to 2014 growing season

Anaktuvuk River fire scar thaw depth measurements during the 2008 to 2014 growing season

Abstract:

The Anaktuvuk River Fire occurred in 2007 on the North Slope of Alaska. In 2008, three eddy covariance towers were established at sites represent ing unburned tundra, moderately burned tundra, and severely burned tundra. Several times during the 2008-2014 growing seasons, thaw depth was measured at approximately 70 points near each of these towers . Data presented here are the individual measurements for each site and date.

Owner/Creator:

Contact:

Keywords:

Arctic LTER keywords:

Date Range:

Sunday, June 22, 2008 to Monday, September 1, 2014

Publication Date:

2015

Methods:

The Anaktuvuk River Fire occurred in 2007 on the North Slope of Alaska. In 2008, three eddy covariance towers were established at sites representing unburned tundra, moderately burned tundra, and severely burned tundra. Several times during the 2008-2014 growing seasons approximately 70 thaw depths were made near each tower. The thaw depths were taken in two separate areas near the towers. Slightly more than half the measurements were taken every 10 m on a 100 x 40 m grid (the CALM grid) located in a representative area &lt;50m south of the towers. The remaining measurements were randomly taken along 30 m transects emanating from the center of each eddy covariance tower in each cardinal direction. Measurements were conducted by inserting a rigid metal rod (~1 cm diameter) vertically into the soil and measuring the depth at which ice bonded soil provided firm resistance. Measurements were taken either from the top of the moss layer or from the soil surface when moss was absent.

Version Changes:

Data collection is ongoing. Data collection and processing through 2014 is complete.
In previous document June 20, 2010 was entered twice where the first instance should have been Aug 27, 2009
Version 2: Updated to newer metadata form (with sites sheet). CH March 2013.
Version 3: Updated to include 2011 and 2012. April 2013
Version 4: Checked keywords against the LTER network preferred list and replaced non-preferred terms. Jim L 15Jan14
Version 5: Added the 2013 and 2014 data. AR and BK.

Variable Details

(Variables names are in the first line/row of the CSV file and Excel data sheet.)

Date

Label: Date

Definition: Date of measurement

Type: Date/time

Date format: DD-MMM-YYYY

Missing values: None specified

Thaw depth Unburned

Label: Thaw depth Unburned

Definition: Thaw depth at the Unburned flux tower

Type: Physical quantity

Unit: centimeter

Maximum: Not specified

Minimum: Not specified

Precision: Not specified

Missing values:

#N/A = Missing or Not Measured

Thaw depth Moderate

Label: Thaw depth Moderate

Definition: Thaw depth at the Moderate burn flux tower

Type: Physical quantity

Unit: centimeter

Maximum: Not specified

Minimum: Not specified

Precision: Not specified

Missing values:

#N/A = Missing or Not Measured

Thaw depth Severe

Label: Thaw depth Severe

Definition: Thaw depth at the Severe burn flux tower

Type: Physical quantity

Unit: centimeter

Maximum: Not specified

Minimum: Not specified

Precision: Not specified

Missing values:

#N/A = Missing or Not Measured

This material is based upon work supported by the National Science Foundation under Grants #DEB-1637459, 1026843, 9810222, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.